Electromagnetic massager



2 Sheets-Sheet 1 J. SHARP ELECTROMAGNETI C MAS SAGER Filed May 5, 1930 May 31, 1932.

OQQOOO May SHARP ELECTROMAGNETIC MASSAGER AFiled May 5, 1950 2 Sheets-Sheet 2 Zig, 7 ,fh-Lw Nw ufl-' Patented May 31, 1932 ,l NtT JOHN SHARP, OF CLEVELAND, OHIO ELECTROE'IAGNETC IvASSAGER i application ined May 5, ieee. serieu No. 449,977.

The invention relates to improvements in electromagnetic massagers for treating the more sensitive or delicate parts of the body such asthe eyeballs, throat, solar plexusor ear, &c, which can not be treatedl with a violent movement.

And the particular features of novelty and utility in the invention are found in the means or producing a gentle magnetic vibration; which will not injure the most deli cate membranes. i l

To accomplish these and other useful results the invention comprises the combination and arrangement of parts and construction of details hereinafter described, illustrated in the accompanying drawings and specically pointed out in the claims.

In the accompanying drawings, Fig. 1 is a longitudinal section of the device adapted for use with either direct or alternating current; Fig. 2 is a plan of the switchvmechanism; Figs. 3 and e are plan and elevation of the vibrating disc and massage cup actuated thereby; Fig. 5 is a longitudinal section of a similar device in which the magnetic action is adapted for the use ot an alternating or interrupted current; Fig. 6 is a plan of the switch mechanism therefor; Fig. 7 shows a modilied form of diaphragm; Fig. 8 is a vertical section of T-headed core taken at right angles to the plane of Fig. 5; Fig. 9 is a plan of a device showing the handle arranged at right angles to the axis of the magnet; Fig. 10 is a longitudinal section thereof; Figs. 11 and 12 are edge view and plan respectively ot a sanitary shield for the vibrating member; Figs. 13 and 14 are plan and elevation or' a vibrating member shaped like a ball and a shield therefor; Figs. 15 and 16 are plan and side elevation respectively of al laminated orm of vibrating disc.

In these views A is an electromagnet composed of an iron laminated core wound with the coil of fine wire B, upon the tubular insulation T.

This electromagnet operates to vibrate rapidly the' metal disc C which is attached to the armature D to which in turn is attached the massage cup or member E.

5o The core and coil are enclosed in a housing F and the contact terminals o the coil B are mounted upon a block of insulation G, and a control switch lever H pivoted at H2 in a lining Lis employed to open and close the circuit through the magnet through contact springs J and K.

ln Figs. 1 and 2 the switch mechanism isl shown to be yprovided with a resilient current interrupting and reciprocating member M in additions to thefusualcontacts J and K by means of which a direct currentvcan be broken into shortaand rapid impulses to vi-y brate the disc (1.5 p

This member `comprises the iron pin M whichpasses into conta'ctwith the core when the core is energized by the passage of electric current therethrough, vbut is instantly withdrawn byits spring connection J when the contacts are released by the action of the lever. v i

This lever in Fig. V2l has three positions when in the centralposition it is adapted for the passage of a direct current. l/Vhen inthe upper position shown in dotted lines it is in position for the passageof lan alternati,ngv or pulsating current, and when in the lower position it opens the switch contacts. y

In Fig. 5 a T-headed she-et metal or laminated core A is shown wound with the tine wirecoil B and having an external metal shell L which forms the return circuit forthel magnetic flow. f v

ln 5 the armature extends upward towards the core at D2 thus being positioned.

nearer the coil and obtaining a more powerful magnetic effect.

In both igures the core is enclosed in a spool having heads G and. G connected by means or the tubular insulation T.V f

In Fig. 8 the T-.head of the core isenclosed in a metal cup 0 which makes cont-act with both` the core A and the outer shell L thus completing the returnmagnetic circuit.

Aninsulation P closes the .outer vend of the unit which is attached by means of screws Q, (shown in Fig. 8) to the metal cup. The terminals It and S are attached to a projection of this insulating block.

-In Fig. 6 the switch lever H operates in eef l et' i' at i two positions only and is shown with the switch members U, W, in closed position.

In Figs. 3 and 7, the disc is shown to he Yprovided with openings X to permit ofair circulation to secure coolness.

In Figs. 9 and l0 a modified form of Fig.

.5 is shown in which the handle is placed at right angles to the casing.

In Figs. lland l2, 13 and 14 a sanitary attachment Z is shown that can be snapped over the vibratable member, and can be thrown away after use to prevent infection of subse` quent patients. Y

InFigs. l5 and 16, a laminated forni of disc is employed, vby means of which an accumulated magnetic effect is obtained and a quiclrerreaction, A.V

'v In this manner Va massage instrument i providedA that can be used wit-hout injury uponthe most sensitive tissues withthe maximum amount ofeiliciency ata very lowl initial cost. s

In Figs. 17l and 18, a side elevation and plan are shown ot' a modified forni lof disc and sleeve, in which thel edges or the disc are cut away at Xand are inserted in corresponding recesses L in the sleeve L.

This Vprovides narrow openings X for air irculation, and loch-s the disc in the sleeveV so that the vibration of the disc will pump the air about the endy of the core and spool and tend to prevent overheating the coil.

Alsothe vibration of the disc will be much facilitated. by cuttingV away the edges. i The construction is also very greatly sim; plified and made more practicaly andeconomical since there are no links, pins, bearings or coiled springs employedl that could work loose or get out of order.

In Fig. l0 the massage member is, found in two sections permitting the outer portion to be exchanged more easily for another.

y I claim:

l.4 In an electromagnetic massagingv device,

the combination with an electromagnet having a coil and a laminated core therefor, an

ternal. return magnetic circuit, anda vibratable iron disc having its edges attached toV theV outer end of said iron cylinder and a mas; sagecup attached to said disc. 3. In an electromagnetic massage instru ment in Combination, a magnet Comprising iron cylinders. y

a coil, a laminated central coreV therefor, and an external iron cylinderenclosing said coil and core, and in magnetic contact with the inner end of said core and comprising an external return magnetic circuit, and a vibratable iron disc having its edgesI attached to the outer end of said iron cylinder and a massage cup attached to said disc, an 'externalcasing and clamp means on said casing for securing the edges of said disc upon the extremity of Said iron. cylinder.

4;. In an electromagnetic massage instrument in combination, a. magnet comprising a coil, a laminated central core therefor, and an external ironl cylinder enclosing said coil and core, and in magnetic contact with the inner endl of said coreandcomprising an external return magnetic circuit., andavibratable iron disc having its edges attached'to the outer end ofsaid iron cylinder anda massage cup attached to said disc, the outer edge of" saidiron cylinder being provided with spaced' radial recesses andthe outer edge ofsaid'iron disc being provided with complementary 'radial projections, there being openings for air circulation provided between said. disc and' Intestimony whereof Ifaiiix my signature- JOHN SHARP.'

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